Spark-coil.



No. 851,027. PATENTED APR. 23, 1907. G. P. L. NOXON.

SPARK COIL.

APPLICATION FILED FEB. 5' 1906.

2 SHEETS-SHEET l.

WlTNESS ESL I I WVENTOR BY Mffimf Cl/fil/JJ ATTORNEY PATENTED APR. 23, 1907. G. P. L. NOXON.

SPARK COIL.

APPLICATION FILED PEB.5, 1906.

2 SHEETS-SHEET a.

INVENTOR 1 690M ATTORNEY CHARLES P. L. NOXON, OF SYRACUSE, NEW YORK.

SPARK-COIL.

Specification of Letters Patent.

Patented April 23, 1907.

A li ti 518.1 February 5,1906. Serial No. 299.441.

To all whom it may concern:

Be it known that 1, CHARLES P. L. NoxoN, of Syracuse, in the county of Onondaga and 'State of New York, have invented a certain new and useful Spark Coil, of which the following is a specification.

My invention has for its object the produc tion of a spark-coil which is particularly efficient in use; and it consists in the combinations and means herein after set forth and claimed.

In describing this invention reference is had to the accompanying drawings, in which like characters designate corresponding parts in all the views. c

Figure 1 is a sectional viewof a preferable form of my spark-coil and a case therefor. Fig. 2 is a diagrammatic view of said sparkcoil. Figs. 3, 4, and 5 are diagrammatic views of modified forms of my spark-coil.

1 is a primary conductor, 2 a secondary. conductor, and 3 a' core, all of which parts may be of any desirable form, size, and construction suitable for use in induction-coils.

The conductors 1 2 are respectively connected in the ordinary manner in a primary circuit and a secondary circuit, and a suitable source 'of electric energy 4, a mechanical means 5 for making and'breaking a circuit, and a current-interrupting means are c0nnected in the primary circuit, the means 5 being usually the ignition-controlling mechanism of the internal-combustion engine to.

which my induction-coil is connected, and the current-mterruptmg means, comprising a terminal6 and an armature 7, which is nor. 'mally in electrical contact with the terminal 6, is moved from the terminal for breaking the primary circuit and is engagedwith said terminal for completing the circuit by any suitable means, as a spring 8.

9 is an electromagnetic means for attracting the armature 7 when the primary circuit is broken by the current-interrupting means and holding such armature from returning into engagement with the terminal 6 to complete the circuit while the mechanical means 5 is making the circuit. Said electromagnetic means is preferably arranged with its core 10 independent of and substantially parallel to the core 3 and with its coil or conductor connected in shunt in the primary circuit. It thus follows that the electromagnetic means 9 bridges the gap formed in the primary circuit when the armature 7 is separated from the terminal 6 and is of greater re thereby interrupt the primary circuit.

sistance than the part of the primary circuit means 9, including the core 10, form a plu-.

rality of electroma netic 'means in the primary circuit for brea ring and for holding open the primary circuit. The conductor or coil of the electromagnetic'means 9 is of high resistance, 'so that the current passing there through is of only sufiicient amperage to energize the core 10 to hold the armature 7 away from the terminal 6, but is insufficient to prevent demagnetization of the core 3.

A switch 1 1 is preferably provided for connecting and disconnecting the means 9 and the primary circuit, it being sometimes desirable to render the means 9 ino erative in order to produce a number of sparlis to ignite a charge as when starting the engine. When a number of my coils are used in connection with a multicylinder internalcombustion engine, correspondingterminals of-the shuntcircuits of high resistance may be connected together and one switch 11 provided for connecting and disconnecting all of said shuntcircuits and the primary circuits of the several coils. In theform shown in 3 the armature is arranged in the magnetic field of the core 10 only and said core is provided with an additional winding 12 of low resistance, so that the winding 12 energizes the core 10 to attract the armature 7 and. to The shunt-circuit of high resistance of the means 9 (shown in Fig. 3) energizes the'core to hold end to end with the core 3; but in this form the armature does not directly interrupt the current, as in the form shown in Fig. 2, but actuates a lever 13, which is normally in contact with a terminal 14 in the primary circuit. In the form shown in Fig; 5 the armature 7 is not in the field of the core 10, but is arranged in that of the core 3-only, and an additional armature 15 coacts with the core 10, both armatures 7 and 15 being held by springs, respectively, in contact with terminals 6 and 16 in the primary circuit. When the armature 7 is attracted by the core 3, the core 10 upon the breaking of said circuit by the armature 7 attracts its armature 15, and

TIC

thus holds open the primary circuit. When primary circuit Comprising a terminal in the the armature 7 is attracted, the core 3 is demagnetized and said armature returns to its position in contact with the terminal 6.

To those skilled in the art it will be understood that by preventing the return of the armature of the eurrent-interrupting means immediately after the circuit is broken the production of more than one spark is avoided and the current passes through the mechanical means 5 uninterruptedly and with maXi mum power and with minimum wear of the separable contacting surfaces of the currentinterrupting means, owing to the elimination of unnecessary makes and breaks of the circuit. means 5 operates to break the circuit a small current is passing over the same, and a minimumamount of sparking and wear of the separable contacting surfaces of the primary circuit results. My invention. is therefore particularly practical and eflicient, especially when used with internal-combustion engines, in which great dill'iculty experienced by undue corroding and burning of the terminals for igniting the charges.

The construction and operation of my spark-coil Willnow be readily understood upon reference to the foregoing description and the, accompanying drawings.

What I claim is 1. .The combination of a primary circuit, a secondary circuit, mechanical means for making and breaking 'the primary circuit, and means for interrupting the current in the primary circuit, the primary circuit including a plurality of electromagnetic means, each having a core, the cores thereof being independent of each other, said electromagnetic means operating the second-mentioned means'to interrupt the current in the pri mary circuit, and to hold saidsecond-,men-

tioned means in its position assumed when interrupting the current while the first-mentioned means is making the circuit, substantially as and for the purpose specified.

2. The combination of a primary circuit, a secondary'circuit, mechanical means for making and breaking the primary circuit, and means for interrupting the current in the primary circuit comprising an armature, the primary circuit including a plurality of electromagnetic means, each having a core, the cores thereof being independent of each other, said electromagnetic means operating 'to attract the armature to interrupt the cur rent in the primary circuit and to hold said armature in its position assumed. when interrupting the current While the first-mentioned means is making thecircu'it, substantially as and for the purpose described.

3. The combination of a primary circuit, a secondary circuit, mechanical means for .makingand breaking the primary circuit, and means for interrupting the current in the Moreover, when the mechanicall l l l l primary circuit, and an armature movable relatively to the terminal for making and breaking the primary circuit, the primary circuit including a plurality of electromagnetic means, each having a core, the cores thereof being arranged substantially parallel to each other, said electromagnetic means operating to attract the armature and move the same out of engagement with the terminal to interrupt the current in the primary circuit, and to hold said armature in its position assumed when interrupting the current While the first-mentioned means is making the circuit, substantially as and for the purpose set forth.

4. The combination of a primary circuit, a secondary circuit, mechanical means for making and breaking the primary circuit, and means for interrupting the current in the primary circuit comprising a terminal in the primary circuit, and an armature movable relatively to the' terminal for making and breaking the primary circuit, the primary circuit including a plurality of electromagnetic means, each having a core, the cores thereof being arranged substantially parallel to each other, said electromagnetic means operating to attract the armature and 'move the same out ofengagement with the terminal to interrupt the current in the primary circuit, and to hold said armature in its posi tion assumed when interrupting the current while the iirst-mentioned'means is making the circuit, one of the 'electromagne tic means being connected in the primary circuit to bridge the gap formed in the primary cir'cui t at said terminal when the armaturis attracted by the other electromagnetic: means, substantially as and for the purpose specified.

5. The combination of a primary circuit, a secondary circuit, mechanical means for making and breaking the primary circuit, and means ,for interrrupting the current in the primary circuit comprising a terminal in the primary circuit, and an armature movable relatively to the terminal for making and breaking the primary circuit, the pri mary circuit including a plurality of electro-' magnetic means, each having a core, the

cores thereof being arranged substantially parallel to cacl1 other,'said electromagnetic means operating to attract the armature and move the same out of engagement with the terminal to interrupt the current in the primary circuit, and to hold said armature in its position assumed when interrupting the current while the first-mentioned means is making the circuit, one of the electromagnetic means being connected in the primary circuit tp bridge the gap formed in the primary circuit at said terminal when the armature is attracted by the other electromag netic means, and being of greater resistance than the part of the primary circuit through IIC . its position assumed when interrupting the 5 Which no-current passes when the current is interrupted by the armature, substantially as and for the purpose described.

6. The combination of a primary circuit, a secondary circuit, mechanical means for making and breaking the primary circuit, means for interrupting the current in the primary circuit, the primary circuit including a plurality of electromagnetic means, each having a core, said electromagnetic means operating the second-mentioned means to interrupt the current in the primary circuit, and to hold said second-mentioned means in current While the first-mentioned means is making the circuit, and means for rendering inoperative the electromagnetic means for holding the second-mentioned means in its position assumed when interrupting the current, substantially as and for the purpose set forth.

7. The combination of a primary circuit, a secondary circuit, mechanical means for making and breaking the primary circuit, means for interrupting the current in the primary circuit comprising a terminal in the primary circuit, and an armature movable relatively to the terminal for making and breaking the primary circuit, the primary circuit including a plurality of electromagnetic means, each having a core, the cores thereof being arranged substantially parallel to each other, said electromagnetic means operating to attract the armature andv move the same out of engagement with the terminal to interrupt the current in the primary circuit, and to hold said armature in its position assumed when interrupting the current While the first-mentioned means is making the circuit, one of the electromagnetic means being connected in the primary circuit to bridge the gap formed in the primary circuit at said terminal when the armature is attracted by the other electromagnetic means, and a switchfor connecting and disconnecting said one of the electromagnetic means from the primary circuit, substantially as and for the purpose specified.

In testimony whereof I have hereunto signed my na me, in the presence of two attesting Witnesses, at Syracuse, in the county of Onondaga, in the State of New York, this 3d day of February, 1906.

CHARLES P. L. NOXON.

Witnesses:

S. DAVIS, F. G. BODELL. 

